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1.
1.) When a person who is devouted on their religion, tries to press their beliefs on others hoping they will join the religion

2.) Hypocrits i.e. Republicans who walk around telling people their going to hell unless they become part of their religion (when they themselves are sinners)
Christian Man: knocks on door
Jewish Man: opens the door and says "hello?"

Christian Man: "Hi! i'm from the christian chruch down the street."

Jewish Man: "And?"

Christian Man: "I came here to tell you that your worshipping the wrong religion, Jesus was our messiah and we messengers of God think that you should convert or else when you die you'll go to hell where your worse nightmares will true and suffer extreme pain for all eternity...... won't you please join the gospel"?

Jewish Man: Slams door and locks it
by Da Master K July 03, 2006
 
2.
The process of turning a girl you've just met, or don't know well into a hook-up in the course of a night.
Nick: I met this sexy-ass bittie the other night at Starbucks and we walked around for a little while.

Joey: Did you convert on her?

Nick: Yeah I got dome in the back of my car!

Al: I converted on this girl I met at Melanie's party.
by kJoey May 19, 2009